/*
 * Copyright 2021 Expedia, Inc
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.qinghzu.graphqlbff.directives

import com.expediagroup.graphql.generator.directives.KotlinDirectiveWiringFactory
import com.expediagroup.graphql.generator.directives.KotlinSchemaDirectiveEnvironment
import com.expediagroup.graphql.generator.directives.KotlinSchemaDirectiveWiring
import graphql.schema.GraphQLDirectiveContainer
import kotlin.reflect.KClass

class CustomDirectiveWiringFactory : KotlinDirectiveWiringFactory(manualWiring = mapOf<String, KotlinSchemaDirectiveWiring>("lowercase" to LowercaseSchemaDirectiveWiring())) {

    private val stringEvalDirectiveWiring = StringEvalSchemaDirectiveWiring()
    private val caleOnlyDirectiveWiring = SpecificValueOnlySchemaDirectiveWiring()

    override fun getSchemaDirectiveWiring(environment: KotlinSchemaDirectiveEnvironment<GraphQLDirectiveContainer>): KotlinSchemaDirectiveWiring? =
        when (environment.directive.name) {
            getDirectiveName(StringEval::class) -> stringEvalDirectiveWiring
            getDirectiveName(SpecificValueOnly::class) -> caleOnlyDirectiveWiring
            else -> null
        }
}

internal fun getDirectiveName(kClass: KClass<out Annotation>): String = kClass.simpleName!!.decapitalize()
